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Modeling the forest phosphorus nutrition in a southwestern Swedish forest site

Author:
  • Lin Yu
  • Giuliana Zanchi
  • Cecilia Akselsson
  • Håkan Wallander
  • Salim Belyazid
Publishing year: 2018-02-10
Language: English
Pages: 88-100
Publication/Series: Ecological Modelling
Volume: 369
Document type: Journal article
Publisher: Elsevier

Abstract english

In this study, a phosphorus (P) module containing the biogeochemical P cycle has been developed and integrated into the forest ecosystem model ForSAFE. The model was able to adequately reproduce the measured soil water chemistry, tree biomass (wood and foliage), and the biomass nutrient concentrations at a spruce site in southern Sweden. Both model and measurements indicated that the site showed signs of P limitation at the time of the study, but the model predicted that it may return to an N-limited state in the future if N deposition declines strongly. It is implied by the model that at present time, the plant takes up 0.50 g P m−2 y−1, of which 80% comes from mineralization and the remainder comes from net inputs, i.e. deposition and weathering. The sorption/desorption equilibrium of P contributed marginally to the supply of bioavailable P, but acted as a buffer, particularly during disturbances.

Keywords

  • Geochemistry
  • Dynamic ecosystem mode
  • Forest nutrition
  • ForSAFE
  • Nitrogen cycle
  • Phosphorus cycle

Other

Published
  • ISSN: 0304-3800
Håkan Wallander
E-mail: hakan [dot] wallander [at] biol [dot] lu [dot] se

Professor

MEMEG

+46 46 222 37 59

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